HEADSET SIGNAL MULTIPLEXING SYSTEM AND METHOD
First Claim
1. A device, comprising:
- a headset;
a first acoustic sensor on the headset having an output signal;
a second acoustic sensor on the headset having an output signal;
modulator circuitry configured for;
receiving (i) a carrier signal and (ii) the output signal of the second acoustic sensor; and
modulating the received carrier signal with the received output signal of the second acoustic sensor to generate a modulated output signal reflective of the output signal of the second acoustic sensor;
combining circuitry configured for;
receiving (i) the output signal of the first acoustic sensor and (ii) the modulated output signal; and
combining the output signal of the first acoustic sensor and the modulated output signal to generate a composite downlink signal for transmission over a common conductor; and
first and second electrical connections configured for providing a connection to a terminal device;
wherein at least one of the first and second electrical connections is coupled with the combining circuitry for directing the composite downlink signal to the terminal device.
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Accused Products
Abstract
A system and method for supplying power to a headset, and for transmitting multiple signals generated in the headset to a terminal using frequency division multiplexing. An audio signal and a carrier signal are generated in the terminal and summed together to form a composite uplink signal. The composite uplink signal is provided to a headset over a first physical channel. At the headset, the audio and carrier signals are separated, and the carrier signal is used to generate power in the headset. Signals generated by a plurality of acoustic sensors in the headset are combined using frequency division multiplexing to generate a composite downlink signal, which is transmitted to the terminal over a second physical channel. One or more carrier signals used to generate the composite downlink signal are provided by either a carrier source in the headset, or by recovering the carrier signal from the composite uplink signal.
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Citations
20 Claims
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1. A device, comprising:
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a headset; a first acoustic sensor on the headset having an output signal; a second acoustic sensor on the headset having an output signal; modulator circuitry configured for; receiving (i) a carrier signal and (ii) the output signal of the second acoustic sensor; and modulating the received carrier signal with the received output signal of the second acoustic sensor to generate a modulated output signal reflective of the output signal of the second acoustic sensor; combining circuitry configured for; receiving (i) the output signal of the first acoustic sensor and (ii) the modulated output signal; and combining the output signal of the first acoustic sensor and the modulated output signal to generate a composite downlink signal for transmission over a common conductor; and first and second electrical connections configured for providing a connection to a terminal device; wherein at least one of the first and second electrical connections is coupled with the combining circuitry for directing the composite downlink signal to the terminal device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a terminal device configured for generating an uplink signal having a audio signal and a carrier signal; a headset configured for generating a downlink signal, the headset comprising a first acoustic sensor having an output signal and a second acoustic sensor having an output signal; a connector interface coupled between the terminal device and the headset and comprising a first electrical connection and a second electrical connection for directing the uplink signal and the downlink signal between the headset and the terminal device; modulator circuitry configured for; receiving (i) a carrier signal and (ii) the output signal of the second acoustic sensor; and modulating the received carrier signal with the received output signal of the second acoustic sensor to generate a modulated output signal reflective of the output signal of the second acoustic sensor; and combining circuitry configured for; receiving (i) the output signal of the first acoustic sensor and (ii) the modulated output signal; and combining the output signal of the first acoustic sensor and the modulated output signal to generate the downlink signal for transmission over the first electrical connection and/or the second electrical connection. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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summing, at a terminal device, an audio signal and a carrier signal to generate an uplink signal; transmitting the uplink signal to a headset; filtering, at the headset, the uplink signal to extract the carrier signal; generating output signals with a first acoustic sensor and a second acoustic sensor; modulating the carrier signal with the output signal of the second acoustic sensor to generate a modulated output signal reflective of the output signal of the second acoustic sensor; combining the modulated output signal and the output signal of the first acoustic sensor to produce a composite downlink signal; and transmitting the composite downlink signal to the terminal device. - View Dependent Claims (17, 18, 19, 20)
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Specification